someone has the firmware Firestudio for OS X 10.11.6
Presonus removed the line file and I want to start recording NOW :(
my iMac is a:
iMac (20-inch, Mid 2007)
It worked perfectly with the only owner it had but now that it will be mine with the interface "Firestudio 26 input 26" its sudden updates screw us people who want to learn a little, the devices are obsolete even though they are NEW !!